Tamper Evident Container Seal Structure and Opening Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Disposable containers with both tamper-resistant and tamper-evident features are complex to open due to their resealable design, making it difficult for consumers to access the contents without damaging the container.
Innovation Solution
A container design featuring a tray and cover connected by a hinge with a circumferential rib and skirt, forming a peripheral seal that can only be opened by tearing along a weakened line, providing both tamper resistance and evidence of opening, while allowing easy access through labeled tabs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tamper resistant and tamper evident features are added to disposable containers, then security and consumer awareness are improved, but device complexity and difficulty of opening increase
Solution Approach 1:
The patent combines tamper-resistant and tamper-evident features into a single integrated seal structure formed by the interaction between the cover flange and tray flange. The seal structure includes a seal portion with a seal line that serves both as a tamper-resistant barrier and a tamper-evident indicator, eliminating the need for separate mechanisms and reducing overall container complexity.
Solution Approach 2:
The seal structure is pre-configured with a weakened seal line during manufacturing that is designed to break in a specific pattern when the container is opened. This preliminary arrangement ensures that tamper evidence is automatically generated during the normal opening process, without requiring additional components or steps from the consumer.
2Reliability
If tamper resistant and tamper evident features are added to disposable containers, then security and consumer awareness are improved, but ease of operation deteriorates
Solution Approach 1:
The seal structure has non-uniform properties along its length, with a localized weakened seal line that requires less force to break than other portions of the seal. This local quality variation allows the seal to remain strong overall for tamper resistance while providing a specific easy-to-open path for legitimate consumers.
Solution Approach 2:
The seal line is segmented into multiple discrete break points distributed around the container periphery. When the container is opened, the seal breaks at these predetermined segments rather than requiring complete destruction of the entire seal, making opening easier while still providing clear tamper evidence through the broken seal pattern.
3Reliability
If a peripheral seal is formed by tray seal structure and cover seal structure, then tamper resistance is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The seal structure incorporates visual indicators such as color changes or contrasting colors between the cover flange and tray flange that make the seal line clearly visible. When the seal breaks, the color change or visual contrast provides immediate and easy detection of tampering without requiring specialized equipment or complex measurement procedures.
Data Source
AI summary
A container includes a tray having an outwardly extending tray flange and a rib projecting upwardly from at least a portion of the tray flange to at least partially define an open top and a cover terminating in an outwardly extending cover flange with a skirt projecting upwardly from the cover flange. When the cover is mounted to the tray to close an open top of the tray, a portion of the skirt lies on top of the rib, and an amount of the skirt that is pinchable is insufficient to apply the force required to overcome a peripheral seal between the cover and the tray to separate the cover from the tray.